Story: Snow White is a little bit tiffed. Offed by her evil step-mother, Snow White's pure, innocent soul was killed in an excruciating manner- the sort of pain no one should be put through, much less an innocent. Soon thereafter, the Seven Dwarves met their own ends, being fed deadly meals of their own by the Step-Mother, who posed as Snow White with a bit of quick illusion magic.
That's when things went pear-shaped for the Queen. See, Snow White was innocent, and the spirit of the forest- the dark, deep woods- had become fond of her. She loved its animals, loved its paths, and was a sweet, kind thing. She didn't deserve to die.
So, stretching it's powers, the Spirit took Snow White back. It put her in her own body again- but the afterlife leaves marks. Snow White's eyes are gone, replaced by dark pits, effectively blinding her; the things she saw, none living were meant to see, and she can't remember the afterlife at all. It doesn't help matters that the spirit can't actually make her live again, just inhabit her own corpse- effectively, an intelligent zombie.